Two halves of same ancient turtle bone found 200 years apart

The giant, ancient sea turtle Atlantochelys mortoni is depicted with the outline of a human diver to indicate scale. The turtle lived 70 million to 75 million years ago.

The giant, ancient sea turtle Atlantochelys mortoni is depicted with the outline of a human diver to indicate scale. The turtle lived 70 million to 75 million years ago. (Jason Poole / Academy of Natural Sciences of Drexel University)